of their 31P1H} NMR signals. The (+)-Norphos complexes [Cp*M(Norphos)Cl]PF6 (M = Rh, Ir; Norphos = (2S,3S)-(+)-bis(diphenylphosphanyl)bicyclo[2.2.1]hept-5-ene; 10 and 11) were synthesized for comparison, which formed two diastereomers. On crystallization both the Rh and the Ir complexes crystallized as 1:1 mixtures of diastereomers, differing in the metal configuration.
[(CP *
MHal)的反应2 ](μ-HAL)2 ](CP * = η 5 -C 5我5 ; M =
铑,
铱;哈尔=
氯,
溴,I)与非对称螯合物膦PP” (= P,P,P ' -三[(+) - 9- phenyldeltacyclan -8-基] -1,2-二(
磷烷基)苯)在复分解试剂NH的存在下4 PF 6,的NaBF 4,和NaBPh 4得到的[CP * M(P-P')哈尔] X(X = PF 6,BF 4,BPH 4 ; 1 - 9)高产。PP'
配体在高对映选择性合成中很容易从降
冰片二烯和
苯乙炔中获得,它包含三个(+)-9-苯基δ环烷-8-基取代基,共有24个同手性不对称碳原子。所述立体异构源
金属中心和次级
磷原子引起4个非对映体,在化合物的合成形成的所有这些都1 - 9。非对映体混合物的结晶,得到化合物11个的单晶1 - 9,其用于确定
金属原子和仲
磷原子处的绝对构型。出乎意料的是,所